Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4654133 | Hall-Heroult electrolysis tank with asymmetrical cathodic bars and heat insulation | Bernard Langon, Laurent Michard | 1987-03-31 |
| 4490233 | Process for thermally insulating precalcined anodes in electrolysis cells for the production of aluminum | — | 1984-12-25 |
| 4435255 | Process and apparatus for controlled feed of alumina and halogen additives into electrolysis vats for the production of aluminum | — | 1984-03-06 |
| 4377452 | Process and apparatus for controlling the supply of alumina to a cell for the production of aluminum by electrolysis | — | 1983-03-22 |